>>281698591
Nanoha starts out magical and ends up military and technical. Its more for people who like that kind of thing and can follow military ranks and jargon.
You can do more modern stuff like Madoka and others in that line but that's more... I don't know how to explain it, horror or grim outcome?
You can do Precure. You can pick and choose which ones to watch and get a solid 50 episodes of good stuff. If you are insane and want to do nothing for the next 2 years straight then you can watch all the series in the franchise.
I'm sure there are some small series out there. I know Okusama wa Majou Soujo is nice (lady is getting older but she is still a magical girl). Mahou Shoujo Tokushusen Asuka and Mahou Shoujo Site are horror series. Mao-chan and Moe-tan are silly magical girl series with referential comedy.